Pulp-vat for paper-making machines



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S w mw W, W4 J N. PETERS, Pnom-uumgnpher, washington DA CA @NNE raras'Faranfr JOII\T F. SEIBERLING, OF AKRON, OHIO.A

PEGIFIQATION forming part of Letters Patent No. 312,390, dated February17, 1885.

Application filed November 29, l8r-4. (No model.\.

T0 aZZ whom it may concern: I

Beit known that I, Jol-IN F. SEIBERLING, of Akron, county of Summit, andState of Ohio, have invented a new and useful Improvement in Pulp-Vaisfor Paper-Making lWIachines, of which the following is a full, clear,and exact description, reference being had to the accompanying drawings,making part of this specification.

My invention relates to an improvement in the vats or tanks from whichthe pulp is supplied or fed to the paper-making machinery,

`whereby I am enabled to remove accumulations of sediment, either offoreign matter or the knotsv or joints of the straw, where the pulp ismade from the latter material, and which if allowed to accumulate and tobe fed out with the pulp to the paperlmaking .nachinery would cause thepaper to become rough and unfitfor use. In the ordinary construction ofthese vats it has been found necessary, whenever the accumulation of theknots and other heavy particles became so considerable as to cause themto be carried out with the pulp to the paper-making machinery, to stopthe operation of the machinery, and to empty, wash out, and refill thevat before the work could proceed, thereby causing not only the injuryto the paper referred to and the annoyance resulting` therefrom,

lbut a serious loss of time and -waste of material.

The object of my invention is to overcome this difficulty, and to thisend it consists in providing the vat with one-or more receptacles in itsbottom or lower part, in which the knots and other heavy particles orsubstances may settle and accumulate, and with means for closing saidreceptacles, and also for flush- Fig. 4, a perspective view of one endof the vat, showing the Outletgate and lever for operating same.

A represents a vat or tank into which the prepared pulp is fed, orinvwhich it is placed, and from which it is supplied to the papermakingmachinery in any usual or preferred manner. I have shown it in Fig. lprovided with a feed roll or cylinder, C, such as is usually employedfor that purpose.

In the bottom of the vat or tank A,and pret'- erably at the end cornersthereof, where the vat is rectangular in form and provided with a flatbottom or flooring, I form one or more shallow compartments orreceptacles, (indicated at B and B,)` open on top, to allow the sedimentand knots referred to to settle and accumulate therein. Thesereceptacles are provided with covers b, by means of which they may beclosed whenever it is desired to remove the accumulations therein, and Iprefer to make these covers of a series of overlapping pivoted slats,b', similar to those of i au ordinary pivoted slat-shutter, but adaptedto overlap and close snugly one upon another. These are connected to arod,b2, crossing them transversely, and provided with arod or han` dle,b, arranged in convenient position to be operated by the attendant forenabling him to close or open the receptacle, in a manner that will bereadily understood from the drawings. I do not, however, wish to berestricted to this construction of cover, as it may he made in a varietyof forms for the same purpose; and receptacle B is shown provided with asolid plate or cover,having an arrangement of sprocket-wheels and chains.adapting it to be removed from the vat, except when it is desired toclose the receptacle for the purpose of cleansing it.

Instead of the sproeketwheel arrangement, a handle or lever may be usedto operate the cover.

At one side of the vat, and preferably that at which the attendantstands, that he may readily see when the cleansing is effected, Iprovide the receptacle with a hinged door or pivoted gate, E, and uponthe opposite side with a hose or supply-pipe, d, for forcing water intoand flushing the receptacle when it is closed. The pipeis provided atd'with a cock,

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from which arod or shaft, D, is shown, extending across the vat andprovided with a handle in convenient position to be operated by theattendant for turning the water on and ott, as desired.

E represents a metal casting provided with suitable lugs or perforatedears, as shown, for attaching same to the vat, preferably upon theoutside thereof. Said casting is provided with a curved inclined rib, e,and t-he gate E hasa similar inclined rib, e', upon its outer surface. Alever, E2, is pivoted to the casting E intermediate of the two inclinedribs, as shown, and when rocked upon its pivot it rides up the inclinedribs and tends to force the gate against its seat upon the casting.

For keeping lever E2 to its work and forcing it with considerablepressure against the inclined ribs for holding the gate E tightlyclosed, a spiral spring, e2, is employed snrroundin'r a bolt, es,extending outward from lever E2, and held in place thereon bya nut atthe outer end of the said bolt, whereby the tension of the spring e2 isadjustable. By vibrating the lever EI into ahorizontal position the gateis free to swing open or be forced open by the pressure of the waterused for the purpose ot' flushing the receptacle.

In practice I prefer to arrange a second vat or tank, F, within thelarger tank A, and of lcss depth, as shown in Fig. l. The side walls ofthe tank or vat A answer also for vatF; but the end walls, F and F`,areseparate, and I prefer-to have the latter curve upward, conforming tothe adjacent side of the feed roll or cylinder, and terminating at itsupper edge below the upper edge of the walls of tank A` as shown, inVsuch manner that the pulp can flow over it into the vat Ffromthe vat A.By this' construct-ion the knots andother sediment are prevented fromlodging on said side, and are carried toward the vertical side wall, F',at the foot of which I place another receptacle, B2, provided with aremovable or pivoted slatcov( r, b. similar to those atBoI Bin thetankA, and for a similar purpose. In practice, the

mo\ ement of the lower surface of the feed-roll C will be toward thereceptacle B2, and this vf-movement, by causing a current in thatdirection, will tend to assist in carrying any sediment or knots intosaid receptacle.

By the construction or double-vat arrangement shown the larger vat formsa passageway tlirough'which the pulp is supplied to the inner vat, F,and serves to assist the latter in collecting the knots and otherobjectionable matter referred to.

The receptacle BHs-provided with waste or exhaust and supply pipes d,similar to those of receptacles B, above described, and for the samepurpose.

Having now described my invention I claim as newl. The combination, withthe pulp-vat or passageway ofa paper-making machine, of a receptacle forsediment provided with inlet and outlet openings at its endsor sides forthe introduction and escape of water, for the purpose and substantiallyas described.

2. In a pulp-vat for papermaking machines, a sediment-receptacleprovided with water supply andl exhaust passages for iushing orcleansing the same, in combination with a cover composed of pivotedseats for opening and closing said receptacle, substantially asdescribed.

8. rIhe combination, with the pulp-vat, of the sediment-receptaclehaving water supply and discharge openings, the supply-pipe d, and therod or shaft I), provided with a nandle arranged in convenient positionto be operated by the attendant, substantially as described.

4. The combination, in a pulp-vat for papermaking machines, of the outertank, vat, or passage, A, the inner tank, F, a series ofsediment-receptacles provided with Water supply and exhaust passages,and covers for `closing said receptacles, substantially asdescribed.

5. The combination, in a pulp-vat. of the gate E, the inclined ribs ee', andthe lever 11j,

substantially as and for the purpose described.

6. The combination, iu a pulp-vat, of the gate E, the inclined ribs eelever E2, and spring e, substantially as described.

In testimony whereof I have hereunto set my hand this 19th day ofNovember, A. D. 1884-.

JNO. F. SEIBERLING.

Vitncsses:

A. W. PEARsoN, XV. S. SHEILL.

